<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>User Authentication</title>
    <style>
        /* Add some basic styling for the form */
        form {
            margin: 20px;
            padding: 20px;
            border: 1px solid #ddd;
            border-radius: 5px;
            background-color: #f9f9f9;
        }
        input[type="text"], input[type="password"], input[type="submit"] {
            margin: 10px 0;
            padding: 5px;
            width: 100%;
            box-sizing: border-box; /* Ensure that padding and border are included in the width */
        }
    </style>
</head>
<body>
    <!-- 用户注册界面 -->
    <form id="register-form">
        <h2>User Registration</h2>
        <input type="text" placeholder="Enter username"><br>
        <input type="password" placeholder="Enter password"><br>
        <input type="password" placeholder="Confirm password"><br>
        <input type="submit" value="Register">
    </form>

    <!-- 用户登录界面 -->
    <form id="login-form">
        <h2>User Login</h2>
        <input type="text" placeholder="Enter username"><br>
        <input type="password" placeholder="Enter password"><br>
        <input type="submit" value="Login">
    </form>
</body>
</html>
